build: add --v8-enable-hugepage flag

PR-URL: #41487
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>

Author: qdaoming

common.gypi

@@ -66,6 +66,9 @@
     'v8_enable_pointer_compression%': 0,
     'v8_enable_31bit_smis_on_64bit_arch%': 0,
 
+    # Disable v8 hugepage by default.
+    'v8_enable_hugepage%': 0,
+
     # This is more of a V8 dev setting
     # https://github.com/nodejs/node/pull/22920/files#r222779926
     'v8_enable_fast_mksnapshot': 0,

configure.py

@@ -775,6 +775,13 @@
     default=True,
     help='compile V8 with auxiliar functions for native debuggers')
 
+parser.add_argument('--v8-enable-hugepage',
+    action='store_true',
+    dest='v8_enable_hugepage',
+    default=None,
+    help='Enable V8 transparent hugepage support. This feature is only '+
+         'available on Linux platform.')
+
 parser.add_argument('--node-builtin-modules-path',
     action='store',
     dest='node_builtin_modules_path',
@@ -1433,7 +1440,9 @@ def configure_v8(o):
     raise Exception('--enable-d8 is incompatible with --without-bundled-v8.')
   if options.static_zoslib_gyp:
     o['variables']['static_zoslib_gyp'] = options.static_zoslib_gyp
-
+  if flavor != 'linux' and options.v8_enable_hugepage:
+    raise Exception('--v8-enable-hugepage is supported only on linux.')
+  o['variables']['v8_enable_hugepage'] = 1 if options.v8_enable_hugepage else 0
 
 def configure_openssl(o):
   variables = o['variables']